References 365% CONFIDENCEOverall confidence: 65%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins from 50% to 74% confidence
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]50%ee.stanford.edu/~hellman/publications/24.pdfee.stanford.edu· Posted Sep 22, 2026· Starts Nov 30, 1976 ✓· 33% of score
The paper's own running head gives the issue and no day: "IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. IT-22, NO. 6, NOVEMBER 1976". A month with no day is estimated at that month's last day.
- [2]90%Diffie–Hellman key exchangeen.wikipedia.org· Added Sep 22, 2026· 33% of score
Describes the method - "a mathematical method of securely generating a symmetric cryptographic key over a public channel" - and calls the 1976 publication "the earliest publicly known work that proposed the idea of a private key and a corresponding public key", noting the 1997 revelation of earlier classified work.[1]
- [3]85%Public-key cryptographyen.wikipedia.org· Added Sep 22, 2026· 33% of score
The field the paper opened, for what a keypair is and how it underpins secure channels on the public internet.[1]
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